Radiator for automobiles, motor-trucks, and similar vehicles.



C. F. 61 P. F. SPERY. RADIATOR FOR AUTOMOBILES, MOTOR TRUCKS, AND SIMILAR VEHICLES.

APPLICATION. FILED IULY 28.19II.

Patented Apr. 29, 1919.

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WITNESS:

CHARLES F. SPEBY PHIIJVIORE F. SPERY, OF CHICAGO, ILLINOIS.

RADIATOR FOR AUTOMOBILES, MOTOR-TRUCKS, AND SIMILAR VEHICLES.

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Specification of Letters Patent.

Patented Apr. 29, 1919.

Application filed July 28, 1917. Serial No. 183,306.

and PHILMORE F. SPERY, citizens of the 'United States, and residents of Chicago, in

the county of Cook and State of Illinois, have jointly invented certain new and useful Improvements in Radiators for Automobiles, Motor-Trucks, and Similar Vehicles; and we do hereby declare that the following description of our invention, taken in connection with the accompanying sheets of drawings, forms a full, clear, and exact specification, which will enable others skilled in the art to which said invention appertains to make and use the same.

g This invention has general reference to radiators; and it consists, essentially, in the novel and peculiar combinationof parts, and details of construction, as hereinafter first fully set forth and described, and then pointed out in the claims.

The'object of this invention is the production of an efiicient, serviceable, durable, and comparatively cheap radiator for auto mobiles, motor trucks, and other vehicles, for cooling the circulating water employed in the internal combustion engines thereof, to keep the engine at a proper working temperature.

To attain these desirable results, we construct this radiator in the preferred embodiment of our invention, as shown in the drawings forming a part of this specification, in which Figure 1 is a miniature front elevation of a radiator of the hexagonal cellular type, no attempt being made in this figure to disclose details of construction shown in other figures. Fig. 2 is a front elevation of a portion of the radiator core detached. Fig. 3 is a sectional elevation in line 33 of Fig. 4, the fillers employed between the water tubes shown in Fig. 2, being omitted in Fig. 3. Fig. 4 is a side elevation of one of the water tubes. Fig. 5 is an end elevation of an associated pair of tube-plates forming a core-unit of the radiator. Fig. 6 is an enlarged sectional eleva-= tion of a portion of one of the water tubes and a filler strip, on line 66 of Fig. 4. Fig. 7 is a similar sectional view on line 3-3 of Fig. 4. Fig. 8 is a plan view of a portion of a filler strip; and Fig. 9 is a) sectional view of the same on line 99 of Fi 8.

Fake parts are designated by the same characters and symbols of reference in all the various figures.

In these drawings, A designates the conventional casing of a radiator, in which the cooling media for the circulating water are located. These media comprise a multiplicity of units of substantially cellular construction, each unit being formed of a strip of sheet metal B, which strip, made from copper or brass, is formed, preferably, in a pair of forming rolls, in the following manner:

At the longitudinal margins of the strip B there are formed, equi-distant apart, projections 12, which pro ections, when viewed "from their edges, as shown in Fig. 5, and other figures, form semi-hexagons. -These projections extend to a short distance from the marginal edges of the strip B, which strip is then bent, as shown in Fig. 5, to form an oblong, rectangular structure, leaving between opposing walls of the strips a space 13, which space forms an air passage,

as will hereinafter appear, said strip B being united at the ends by an overlap 1 L, or other suitable means. Into this space 13 there is placed a filler C, which filler is formed of a strip of sheet metal, by passing it, preferably, between a pair of formingrolls, to corrugate the same, the contour of the corrugations being semi-hexagonal, whereby, when said strip is doubled upon itself, as indicated at 00, in Fig. 9, these corrugations form true, or approximately true, hexagons; and when this filler is placed into the space 13, the corrugations, in conjunction with the semi-hexagonal projections 12 on the strip B, likewise form substantially true hexagons, as best illustrated in Fig. 2.

In the strip Bthere are formed, preferably circular, depressions 16, which form dowels; and in the filler strip C there are formed corresponding depressions 17 which serve as sockets for, and are engaged by, the dowels 16, when the fillers are placed into the spaces 13, to properly locate them temporarily in position.

When these units are assembled, as shown in Figs. 3 and 7 there is produced between each two units, a vertical duct D, which ,rection, acts upon the walls of the water 'tions 12 is attained.

passages and keeps this Water at the proper temperature.

In a successfully operating radiator, it is essential that the amount of metal employed therein, be fairly proportionate to the amount of water to be cooled, in order that the heat-conductivity of this metal may absorb, or withdraw this heat from the water. V'Vhile a radiator, constructed as described, but without the fillers in the spaces 13, functions fairly well, better results are obtained by the employment of these fillers.

The strips B, C, are, as stated, formed of sheet metal, which sheet metal is very thin, hardly ever exceeding #34. 13. & S. gage, in order to keep the weight and the expense of the radiator as low as possible. but in view of this fact it very diiiicult, if not impossible, to form these projections on the longitudinal margins of a flat strip without tearing the metal; and we have adopted the semi-hexagonal contour of these projections which have inclined walls 21. and sloping backs 22, which allows some of the metal to be drawn from the strip to form these projections, but not sutiiciently so to insure against tears and breaks in these projections. In order to avoid these breaks we first pass a ribbon of proper width through corrugating rolls to form wave-like transverse I corrugations therein, and then subject this strip to the action of shaping dies wherein the semi-hexagonal contour of the projec- At the same time there is formed by these dies, adjacent these semihexagonal projections 12, approximately semi -circular projections 23, Fig. 4, and these projections are connected by approximately semi-hexagonal transverse corrugations 18, which arcuate and semi-hexagonal projections take up metal from the original wave-like corrugations of the strip and allow the semi-hexagonal projections 12 to be perfectly formed without tearing the metal. This flowing of metal when subjected to the action of forming dies is well known and understood by experts in the art of sheet metal working. These corrugations 18. in addition to their serving as stitfeners, perform the further function of increasing the metallic cooling surface, and at the same time produce, in the water passages, strictures 25, alternating with enlargements 26, best shown in l i g. 7, whereby the descending water in these water passages is alternately contracted and expanded, or in other words, the down-flow alternately increased and diminished and therefore, brought into better contact with the cooling surfaces of said passages. In order to establish communication between the longitudinal air passages 19, which passages are alternately of one hexagonal passage, and two semi-hexagonal passages, we form in the apexes of the corrugations openings 20, Figs. 8, 9 and others thereby producing, as it were, connections between these air passages, and connect each hexagonal passage with the adjacent semihexagonal passages, thereby affording a better circulation of air than the horizontal passages alone will produce.

In assembling the units to form an integral structure, they are, preferably, placed into a form or jig corresponding to the shape of the openings in the front and rear walls of the casing A, which. the structure is to occupy, in which jig the parts of the units are securely held in correct position, after which the ends of the assembled units are dipped into molten solder to integrally unite them, and to prevent leakage of water through the various joints.

A. radiator as described, can be cheaply manufactured for the reason that the complete formation of the strips B, C, can be accomplished by a single pass betweenpropor] y constructed rolls and dies; and while we prefer to make the tiller strips C of brass or copper, tin plate can be readily used for these strips, which do not come in contact with water, and in the process of corrugating, are not Subjected to as much strain as the. strips B, thereby somewhat reducing the cost of manufacture of these radiators.

lVe have heretofore described with considerable minuteness the preferred embodiment of our invention, but we are aware that minor details of construction may be varied, and parts omitted, without departing from the scope of our invention, as defined in the subjoined claims.

Having thus fully described this invention, we claim as new, and desire to secure to ourselves by Letters Patent of the United States 1. In a radiator of the nature described, i

a core, said core comprising a multiplicity'of alike units, each unit consisting of two plates in parallel spaced relationship, said plates being connected to form a rectangular structure, there being at the marginal edges of said plates spaced-apart, semi-hexagonal projections extending in opposite directions, the space between the two plates affording an air passage, there being adjacent saidsemi-hexagonal projections short, arcuat e, projections, there being between the said a1- cuate projections semi-hexagonal projections connecting the marginal projections, said connecting projections being approximately one half the height of the marginal projections, two of said units when placed side by side with the projections on one plate engaging the interstices between the projections of the opposing plate forming between them a vertical water passage of a length equal to the distance between the projections on the mar ins of said plates, and of a width substantially equal to the height of said marginal projections, said water passages being true, vertical, throughpassages having alternately at one, and then at the other. side enlargements or chambers, there being in said air passage a filler strip, said filler strip being semi-hexagonally corrugated with the apexes of the corrugations contacting with the apexes of the corrugations of an adjacent core-unit, to complete the hexagonal, cellular, formation of the core.

2. In a radiator of the nature described, a core, said core having alternately vertical water passages and horizontal air passages, there being in each of said air passages a heat conductor, said heat conductor comprising a strip of metal, said strip of metal being semi-hexagonally, and transversely corrugated, said strip of metal being doubled upon itself, there being in the apexes of said corrugations a series of perforations reaching over a part of the inclined port-ions of sa-i corrugations, the apexes of the doubled-up strip being in contact, whereby when said strips are located in the air passages, there are formed therein horizontal hexagonal passages alternating with semi-hexagonal passages, said openings affording communication between the hexagonal and the semihexagonal passages.

In testimony that we claim the foregoing as our invention, we have hereunto set our hands.

CHAR-LES F. SPERY. PHILMORE F. SPERY. 

